<template>
  <view>
   <view class="goods-item">
     <!-- 左侧图片区域 -->
     <view class="goods-item-left">
       <!-- 使用 v-if 指令控制 radio 组件的显示与隐藏 -->
       <radio :checked="goods.goods_state" color="#C00000" v-if="showRadio" @click="radioClickHandler"></radio>
       <image :src="goods.goods_small_logo || defaultPic" mode="" class="goods-pic"></image>
     </view>
     <!-- 右侧商品信息区域 -->
     <view class="goods-item-right" @click="gotoDetail(goods)">
       <!-- 商品标题 -->
       <view class="goods-name">
         {{goods.goods_name}}
       </view>
       <view class="goods-info-box">
         <!-- 商品价格 -->
         <view class="goods-price">
           ￥{{goods.goods_price | tofixed}}
         </view>
         <!-- 商品数量 -->
         <uni-number-box :min="1" :value="goods.goods_count" v-if="showNum" @change="numChangeHandler"></uni-number-box>
       </view>
     </view>
   </view>
  </view>
</template>

<script>
  export default {
    name:"my-goods",
     // 定义 props 属性，用来接收外界传递到当前组件的数据
    props:{
      // 商品的信息对象
      goods:{
        type:Object,
        default:{}
      },
      // 是否展示图片左侧的 radio
      showRadio:{
        type:Boolean,
        default:false
      },
      // 是否展示价格右侧的 NumberBox 组件
      showNum:{
        type:Boolean,
        default:false
      }
    },
    data() {
      return {
         // 默认的空图片
        defaultPic: 'https://img3.doubanio.com/f/movie/8dd0c794499fe925ae2ae89ee30cd225750457b4/pics/movie/celebrity-default-medium.png',
      };
    },
    methods:{
      radioClickHandler(){
        this.$emit('radio-change',{
         goods_id: this.goods.goods_id,
         goods_state: !this.goods.goods_state
          })
      },
      // NumberBox 组件的 change 事件处理函数
      numChangeHandler(val){
        this.$emit('num-change',{
          goods_id:this.goods.goods_id,
          goods_count: +val
        })
      },
      gotoDetail(item){
        uni.navigateTo({
          url:'/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
        })
      }
    },
    filters:{
      tofixed(num){
        return Number(num).toFixed(2)
      }
    }
  }
</script>

<style lang="scss">
.goods-item{
  // 让 goods-item 项占满整个屏幕的宽度
  width: 750rpx;
  box-sizing: border-box;
  display: flex;
  padding: 10px 5px;
  border-bottom: 1px solid #f0f0f0;
  .goods-item-left{
    margin-right: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    .goods-pic{
      width: 100px;
      height: 100px;
      display: block;
    }
  }
  .goods-item-right{
    display: flex;
    flex: 1;
    flex-direction: column;
    justify-content: space-between;
     .goods-name{
       font-size: 13px;
     }
     .goods-info-box{
       display: flex;
       justify-content: space-between;
       align-items: center;
     }
     .goods-price{
       font-size: 16px;
       color: #C00000;
     }
  }
}
</style>
